This is a key改为一般疑问句?

This is a key改为一般疑问句? this is his key 改为一般疑问句 This is my key.改为一般疑问句! This is a desk.(改为一般疑问句) This is a ruler 改为一般疑问句 this is a pencil 改为一般疑问句 This is a computer.(改为一般疑问句) This is a pen.改为一般疑问句 This is a ruler改为一般疑问句 This is a map 改为一般疑问句 This is a camera.(改为一般疑问句) This is my blue pen.(改为一般疑问句）()this () blue pen?This is a white key.(对划线部分提问)()()this? It's a key.(改为一般疑问句) Tom is my friend.改为一般疑问句 This a key in English.(对划线部分提问）That is my uncle.改为否定句 This is her lomuter 改为一般疑问句 She is a new student改为一般疑问句 My key is on the bed?改为一般疑问句 My key is on the chair 改为一般疑问句 This is a pencil sharpener.(改为一般疑问句)